The single player mode is a particularly interesting or innovative as in virtually all COD parts more pro forma. The levels are relatively varied, but on such a mission like the legendary sniper mission in MW 1 is hoped in vain. The missions in space and under water are nice, but have not pulled me away. Many scenes were nachgerendet also from other parts with other textures - that's really embarrassing.
But you do not play COD indeed actually due to the SP. The MP like me better than MW3, particularly the issue of the perks is now for casual gamers better solved by Squad Points that you can earn. This can then be perks, weapons and accessories to unlock. I find it good. The maps are very different. There are some great and very confusing maps, on which very quickly lose most players' digital lives. Other widerum make really fun and make a good team and good mood. However, I do not understand why the spawn points are set so so stupid? It happens constantly that I die right in front of or near opponents and after the spawn again lose my life pixels few seconds. This is extremely annoying and frustrating - which has the intern program?
Conclusion: I have got what I expected - no more, no less. The frustration factor in MP is sometimes extremely high, inexperienced players might quickly throw here the controller in the corner.